BWI's
Observation Gallery -

A lot of avianuts attribute at least part of their obsession
with flying things to youthful experiences at airports - at least
those of us old enough to remember peering through fences,
hanging out on observation decks and a more open airport
environment. Recent years have seen priorities of security and
efficiency obstruct the view and the fun of airports fade away.
BWI has made a commendable step toward countering that trend.

It's a little Air & Space Museum (which has a store
there), with displays, mockups, and lots of real aircraft parts -
even better than the old view through the fence in some ways.

Well, you can't hear big old piston
engines running up, but the view is great and the chairs
are comfortable.